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Expand stage: Stage tab (DataStage)

Expand stage: Stage tab (DataStage)

The Stage tab for the Expand stage enables you to control aspects of the Expand stage.

Double click the stage to open the stage properties panel. The Properties section lets you specify what the stage does. The Advanced section allows you to specify how the stage executes. Specify an optional description of the stage.


The Expand stage only has a single property which determines whether the stage uses uncompress or GZIP:
Table 1. Properties
Category/Property Values Default Mandatory? Repeats? Dependent of
Options/Command uncompress/gzip uncompress Y N N/A


Specifies whether the stage will use uncompress (the default) or GZIP.


This section allows you to specify the following:

  • Execution Mode. The stage can execute in parallel mode or sequential mode. In parallel mode the input data is processed by the available nodes as specified in the Configuration file, and by any node constraints specified on the Advanced section. In Sequential mode the entire data set is processed by the conductor node.
  • Combinability mode. This is Auto by default, which allows IBM® DataStage® to combine the operators that underlie parallel stages so that they run in the same process if it is sensible for this type of stage.
  • Preserve partitioning. This is Set by default. You can explicitly select Set or Clear. Select Set to request the next stage should attempt to maintain the partitioning.
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